[murphy235]

Well I was looking for a new mouthpiece and I was wondering what effects on sound the tip opening and facing length have.

i.e Does a shorter facing yield a brighter sound?

I know that with larger tip openings you're supposed to use a soft reed, generally speaking. Any words on how face length affects this as well?

Thanks.

 

[Bar-Ron]

Facing lengths affect playabilty and embouchure technique in relationship to the reed more than anything. How that gets used by the mouthpiece to reflect sound is inside the mp. Certain facings are better at giving off vibrations from the reed in a particular way, but a simple explaination won't work.
Evrything in a mp from reed to facing length to opening, baffle angle and interior dimensions are relationships. Relationships that your particular mouth and embouchure are a part of.

Search the archives, Much discussion has already occurred on mp brightness and darkness and what affects that.